function Config() {

    var name = 'threejs-editor';

    var storage = {
        'language': 'zh',

        'autosave': true,

        'project/title': '',
        'project/editable': false,
        'project/vr': false,

        'project/renderer/antialias': true,
        'project/renderer/shadows': true,
        'project/renderer/shadowType': 1, // PCF
        'project/renderer/physicallyCorrectLights': false,
        'project/renderer/toneMapping': 0, // NoToneMapping
        'project/renderer/toneMappingExposure': 1,

        'settings/history': false,

        'settings/shortcuts/translate': 'w',
        'settings/shortcuts/rotate': 'e',
        'settings/shortcuts/scale': 'r',
        'settings/shortcuts/undo': 'z',
        'settings/shortcuts/focus': 'f'
    };

    if ( window.localStorage[ name ] === undefined ) {

        window.localStorage[ name ] = JSON.stringify( storage );

    } else {

        var data = JSON.parse( window.localStorage[ name ] );

        for ( var key in data ) {

            storage[ key ] = data[ key ];

        }

    }

    return {

        getKey: function ( key ) {

            return storage[ key ];

        },

        setKey: function () { // key, value, key, value ...

            for ( var i = 0, l = arguments.length; i < l; i += 2 ) {

                storage[ arguments[ i ] ] = arguments[ i + 1 ];

            }

            window.localStorage[ name ] = JSON.stringify( storage );

            console.log( '[' + /\d\d\:\d\d\:\d\d/.exec( new Date() )[ 0 ] + ']', 'Saved config to LocalStorage.' );

        },

        clear: function () {

            delete window.localStorage[ name ];

        }

    };

}

export { Config };
